ma61 diff bearings options?

[ma61anthony]

Have done some searching to try and find some aftermarket bearings for the ma61 diff but cant really find any online i usually use geuine toyota parts but after ringing up and it being 400+ dollars for 4 bearings i am looking at other options still using good quality bearings just not toyota ones this time was wondering if anyone has bearing partnumbers or dimensions and maybe we could make a sticky for this to help others out. i am putting the true trac 911a342 diff in mine and know 50mm id bearings are needed i found that 32010x timiken bearing is said to have the larger 50mm inner measurement but that was off google so cannot confirm yet if anyone has part numbers i would like to know thanks.

[CrUZida]

I'm running Nachi 50KB80ILT in my truetrac.
Cost me about $120

[J-M kujala]

I just go to local bearing shop and pick up bearings. i have no numbers unfortunatly.. width was same than OEM.. i had to put some shims between Truetrac & Bearings, there was no possibilities to use thick enough shims between diff housing & bearing. True trac was a litle shorter than oem LSD unit.

Also MA61 axle stubs wont lock up perfectly, because there was no locking groove and C clip doesnt come over the splines, so i modify inner end of the splines... now C-clip come over the splines and lock up stubs.


Grinded splines




diff ready:
i built this to good friend of mine, so i make small prank and paint the diff...(just ask if he want i paint it)





7.5" IRS rear with 911A342 truetrac is strong !!

Pudasjärven Testi/Kiihdytyspäivä (4( 16.06.2012 = 60 FT=1.826 Loppun.=196,72 Aika=11,572 - YouTube

[ma61anthony]

Which bit did u modify on splines the true trac or the axles? I am going to try a bearing place I will post up aftermarket numbers when I do with the true trac bearings its a 50mm inner size needed?

[J-M kujala]

Post before...... True trac replace original LSD.

[J-M kujala]

Which bit did u modify on splines the true trac or the axles? I am going to try a bearing place I will post up aftermarket numbers when I do with the true trac bearings its a 50mm inner size needed?

Im sorry dont remeber exactly bearing size, but some issue there was maybe just 45->50mm

Check true trac Picture before, and see splines at inside side gear what is turned upside down. Inner end of the splines have modified with small crinder. Just cut off some millimetres of spline.

I use 8mm straight grinding tool with rounded end. And air tool (straigh grinder) splines wAs to hard to machine. Maybe destroy expensive tools when done that way.


Before pressing bearings to lsd unit, check the leght of LSD unit & gear flange location before press bearing in and shim them correctly, then its easyer to shim where its originally shimmed and custom grinded & machined shims are no needed.